1  /*
       2   * $Id$
       3   *
       4   * Copyright (c) Andrew G. Morgan <morgan@ftp.kernel.org>
       5   *
       6   */
       7  
       8  #ifndef LIBPAMC_H
       9  #define LIBPAMC_H
      10  
      11  #include "config.h"
      12  
      13  #include <security/pam_client.h>
      14  #include <security/_pam_macros.h>
      15  
      16  #include <sys/stat.h>
      17  #include <unistd.h>
      18  #include <sys/types.h>
      19  #include <dirent.h>
      20  #include <sys/wait.h>
      21  #include <stdint.h>
      22  #include <stdlib.h>
      23  #include <errno.h>
      24  #include <ctype.h>
      25  
      26  #define _PAMC_DEFAULT_TOP_FD  10
      27  
      28  struct pamc_handle_s {
      29      struct pamc_agent_s *current;
      30      struct pamc_agent_s *chain;
      31      struct pamc_blocked_s *blocked_agents;
      32      int max_path;
      33      char **agent_paths;
      34      int combined_status;
      35      int highest_fd_to_close;
      36  };
      37  
      38  typedef struct pamc_blocked_s {
      39      char *id;                       /* <NUL> terminated */
      40      struct pamc_blocked_s *next;
      41  } pamc_blocked_t;
      42  
      43  typedef struct pamc_agent_s {
      44      char *id;
      45      int id_length;
      46      struct pamc_agent_s *next;
      47      int writer;   /* write to agent */
      48      int reader;   /* read from agent */
      49      pid_t pid;    /* agent process id */
      50  } pamc_agent_t;
      51  
      52  /* used to build a tree of unique, sorted agent ids */
      53  
      54  typedef struct pamc_id_node {
      55      struct pamc_id_node *left, *right;
      56      int child_count;
      57      char *agent_id;
      58  } pamc_id_node_t;
      59  
      60  /* internal function */
      61  int __pamc_valid_agent_id(int id_length, const char *id);
      62  
      63  #define PAMC_SYSTEM_AGENT_PATH        "/lib/pamc:/usr/lib/pamc"
      64  #define PAMC_SYSTEM_AGENT_SEPARATOR   ':'
      65  
      66  #endif /* LIBPAMC_H */